#!/bin/sh
# $Id: icecast.SlackBuild,v 1.7 2013/10/15 15:33:28 root Exp root $
# Copyright 2004, 2005, 2006, 2010, 2013  Eric Hameleers <alien@slackware.com>
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
#   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#   IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:         Eric Hameleers <alien@slackware.com>
# For:        icecast
# Descr:      Xiph's streaming media server for mp3 and ogg audio
# URL:        http://icecast.org/
# Needs:      
# Changelog:  
# 2.0.0-1:    16/jan/2004 by Eric Hameleers
# 2.0.0-2:    17/jan/2004 by Eric Hameleers
#             Bug fix in the rc.icecast script
# 2.0.0-3:    22/apr/2004 by Eric Hameleers
#             Add "next" operatrion to rc.icecast
# 2.0.2-1:    20/oct/2004 by Eric Hameleers
#             Rebuilt new releease.
# 2.2.0-1:    01/jan/2005 by Eric Hameleers
#             Rebuilt new releease.
# 2.2.0-2:    11/aug/2005 by Eric Hameleers
#             Add "current" and "status" to rc.icecast parameters.
#             Make sure that existing /etc/rc.d/rc.icecast isn't overwritten.
# 2.2.0-3:    17/sep/2005 by Eric Hameleers
#             Forgot to add "current" to rc.icecast 'help' output
#             (i.e. run rc.icecast with no parameters).
# 2.3.0-1:    04/oct/2005 by Eric Hameleers
#             New release.
# 2.3.1-1:    28/feb/2006 by Eric Hameleers <alien@sox.homeip.net>
#             New release.
# 2.3.2-1:    15/Sep/2010 by Eric Hameleers <alien@slackware.com>
#             * New release and build for Slackware 13.1.
# 2.3.3-1:    15/oct/2013 by Eric Hameleers <alien@slackware.com>
#             * Updated for Slackware 14.
# 
# Run 'sh icecast.SlackBuild' to build a Slackware package.
# The package (.tgz) and .txt file as well as build logs are created in /tmp .
# Install it using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# Set initial variables:

PRGNAM=icecast
VERSION=${VERSION:-2.3.3}
BUILD=${BUILD:-1}
NUMJOBS=${NUMJOBS:" -j4 "}
TAG=${TAG:-alien}

# This covers most filenames you'd want as documentation. Change if needed.
DOCS="ABOUT* AUTHORS BUGS ChangeLog* COPYING CREDITS FAQ GPL* HACKING \
      LICENSE MAINTAINERS NEWS README* TODO"

# The deamon process uses its own userid:
iceuser=icecast
icegroup=icecast

# Where do we look for sources?
SRCDIR=$(cd $(dirname $0); pwd)

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.gz"
SRCURL="http://downloads.xiph.org/releases/${PRGNAM}/${PRGNAM}-${VERSION}.tar.gz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Automatically determine the architecture we're building on:
MARCH=$( uname -m )
if [ -z "$ARCH" ]; then
  case "$MARCH" in
    i?86)    export ARCH=i486 ;;
    armv7hl) export ARCH=$MARCH ;;
    armv6hl) export ARCH=$MARCH ;;
    arm*)    export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *)       export ARCH=$MARCH ;;
  esac
fi

case "$ARCH" in
  i486)      SLKCFLAGS="-O2 -march=i486 -mtune=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  armv7hl)   SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  armv6hl)   SLKCFLAGS="-O2 -march=armv6 -mfpu=vfp -mfloat-abi=hard"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  *)         SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
esac

case "$ARCH" in
    arm*)    TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)       TARGET=$ARCH-slackware-linux ;;
esac

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line ${LINENO}" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Save old umask and set to 0022:
_UMASK_=$(umask)
umask 0022

# Create working directories:
mkdir -p $OUTPUT          # place for the package to be saved
mkdir -p $TMP/tmp-$PRGNAM # location to build the source
mkdir -p $PKG             # place for the package to be built
rm -rf $PKG/*             # always erase old package's contents
rm -rf $TMP/tmp-$PRGNAM/* # remove the remnants of previous build
rm -rf $OUTPUT/{configure,make,install,error,makepkg}-$PRGNAM.log
                          # remove old log files

# Source file availability:
if ! [ -f ${SOURCE} ]; then
  echo "Source '$(basename ${SOURCE})' not available yet..."
  # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
  [ -w "$SRCDIR" ] || SOURCE="$OUTPUT/$(basename $SOURCE)"
  if [ -f ${SOURCE} ]; then echo "Ah, found it!"; continue; fi
  if ! [ "x${SRCURL}" == "x" ]; then
    echo "Will download file to $(dirname $SOURCE)"
    wget -nv -T 20 -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 -o ! -s "${SOURCE}" ]; then
      echo "Downloading '$(basename ${SOURCE})' failed... aborting the build."
      mv -f "${SOURCE}" "${SOURCE}".FAIL
      exit 1
    fi
  else
    echo "File '$(basename ${SOURCE})' not available... aborting the build."
    exit 1
  fi
fi

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

# Explode the package framework:
if [ -f $SRCDIR/_$PRGNAM.tar.gz ]; then
  cd $PKG
  explodepkg $SRCDIR/_$PRGNAM.tar.gz
  cd -
fi

cd $TMP/tmp-$PRGNAM
echo "Extracting the source archive(s) for $PRGNAM..."
tar -xvf ${SOURCE}
cd ${PRGNAM}-${VERSION}

# Fix the document directory:
sed -i -e 's/^docdir .*/docdir = @docdir@/' $(grep -lr Makefile.in .)

chown -R root:root .
chmod -R u+w,go+r-w,a+X-s .

echo Building ...
LDFLAGS="$SLKLDFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --localstatedir=/var \
  --sysconfdir=/etc/icecast \
  --program-prefix= \
  --program-suffix= \
  --build=$TARGET \
  2>&1 | tee $OUTPUT/configure-${PRGNAM}.log

make $NUMJOBS 2>&1 | tee $OUTPUT/make-${PRGNAM}.log
make DESTDIR=$PKG install 2>&1 | tee $OUTPUT/install-${PRGNAM}.log

# Create an icecast log directory:
mkdir -p $PKG/var/log/icecast

# Don't use nobody - we create an icecast account:
( cd $PKG/etc/icecast && patch -p0 --verbose < $SRCDIR/icecast_conf.patch )

# Ensure we do not overwrite any customizations:
mv $PKG/etc/icecast/icecast.xml{,.new}

# Add a rc script:
mkdir -p $PKG/etc/rc.d
cat $SRCDIR/rc.icecast.new > $PKG/etc/rc.d/rc.icecast.new

# Add this to the doinst.sh:
! [ -d $PKG/install ] && mkdir -p $PKG/install
cat <<EOINS >> $PKG/install/doinst.sh
# Handle the incoming configuration files:
config() {
  for infile in \$1; do
    NEW="\$infile"
    OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
    # If there's no config file by that name, mv it over:
    if [ ! -r \$OLD ]; then
      mv \$NEW \$OLD
    elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
      # toss the redundant copy
      rm \$NEW
    fi
    # Otherwise, we leave the .new copy for the admin to consider...
  done
}

preserve_perms() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  if [ -e \$OLD ]; then
    cp -a \$OLD \${NEW}.incoming
    cat \$NEW > \${NEW}.incoming
    mv \${NEW}.incoming \$NEW
  fi
  config \$NEW
}

config etc/icecast/icecast.xml.new
preserve_perms etc/rc.d/rc.icecast.new

# Only way to create and use the correct uid and gid on the target system,
# is to use chroot:
chroot . <<EOR 2>/dev/null
# Add the '${icegroup}' group if it doesn't exist already.
/usr/sbin/groupadd ${icegroup} 2> /dev/null

# Add the '${iceuser}' user if it doesn't exist already
/usr/sbin/useradd -c "Icecast" -d /usr/share/icecast \\
  -g ${icegroup} -s "/bin/false" ${iceuser} 2> /dev/null

# Configure the home directory
chown -R ${iceuser}:${icegroup} usr/share/icecast
chmod 750 usr/share/icecast

# Configure the conf directory
chown -R ${iceuser}:${icegroup} etc/icecast
chmod 750 etc/icecast

# Configure the log directory
chown -R ${iceuser} var/log/icecast
chmod 750 var/log/icecast
EOR

#
# Update rc.local so that Icecast will be started on boot
#
if ! grep "rc.icecast" etc/rc.d/rc.local 1>/dev/null 2>&1 ; then
  cat <<_EOM_ >> etc/rc.d/rc.local

if [ -x /etc/rc.d/rc.icecast ]; then
  # Start Icecast server
  echo "Starting icecast:    /etc/rc.d/rc.icecast start"
  /etc/rc.d/rc.icecast start
fi
_EOM_
fi

EOINS

# Add documentation:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
#cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
cat $SRCDIR/$(basename $0) > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
chown -R root:root $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc -type f -exec chmod 644 {} \;

# Compress the man page(s):
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;
  for i in $(find $PKG/usr/man -type l -name "*.?") ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
fi

# Strip binaries (if any):
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/${PRGNAM}.slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} > ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz}.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.txt

# Restore the original umask:
umask ${_UMASK_}